Shell is a context menu extender that lets you handpick the items to integrate into Windows File Explorer context menu, create custom commands to access all your favorite web pages, files, and folders, and launch any application directly from the context menu. It also provides you a convenient solution to modify or remove any context menu item added by the system or third party software. Shell is a portable utility, so you don’t need to install anything on your PC.
Shell claims portability but I believe this is more a case of being able to (un)install on-the-fly...
Download the release package and unzip its content in any location you want.
Open an elevated command prompt.
Administrative permissions required for installation...
Shell provides a variety of statements and expressions. Most of these will be familiar to developers who have programmed in C, C++, C#. Expressions gives you all the power of Shell, but is using a simplified syntax that's easier to learn if you're a beginner, and makes you more productive if you're an expert.
Shell latest release is v1.5: changes and 32/64-bits downloads at https://nilesoft.org/download.